honorary — adjective Etymology: Latin honorarius, from honor Date: 1568 1. a. having or conferring distinction b. commemorative 2. dependent on honor for fulfillment 3. a. conferred or elected in recognition of achievement or service without the usual… … New Collegiate Dictionary

Astronaut — For other uses, see Astronaut (disambiguation). Cosmonaut redirects here. For other uses, see Cosmonaut (disambiguation). Astronaut Bruce McCandless II using a Manned Maneuvering Unit outside the United States Space Shuttle Challenger in 1984. An … Wikipedia

CNO cycle — Overview of the CNO I Cycle. The CNO cycle (for carbon–nitrogen–oxygen) is one of two sets of fusion reactions by which stars convert hydrogen to helium, the other being the proton–proton chain. Unlike the proton–proton chain reaction, the CNO… … Wikipedia

United States Air Force — USAF redirects here. For other uses, see USAF (disambiguation). The U.S. Air Force redirects here. For the song, see The U.S. Air Force (song). United States Air Force … Wikipedia